diff options
author | Johan Hovold <johan@kernel.org> | 2017-01-03 16:40:03 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-12 11:22:46 +0100 |
commit | ad4de3d91872dafab6a71c26c870972ce49ca84d (patch) | |
tree | cf7601ecb0a4df30474871cce6b080461c9cedfa /drivers/usb/serial/ti_usb_3410_5052.c | |
parent | f0bdd7e0ccb22ed791402102c04e47b90b407d0a (diff) |
USB: serial: ti_usb_3410_5052: fix NULL-deref at open
commit ef079936d3cd09e63612834fe2698eeada0d8e3f upstream.
Fix NULL-pointer dereference in open() should a malicious device lack
the expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
..
[<bf06a6b0>] (ti_open [ti_usb_3410_5052]) from [<bf02e118>] (serial_port_activate+0x68/0x98 [usbserial])
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/ti_usb_3410_5052.c')
-rw-r--r-- | drivers/usb/serial/ti_usb_3410_5052.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 2694df2f4559..535fcfafc097 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -339,6 +339,13 @@ static int ti_startup(struct usb_serial *serial) goto free_tdev; } + if (serial->num_bulk_in < serial->num_ports || + serial->num_bulk_out < serial->num_ports) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + status = -ENODEV; + goto free_tdev; + } + return 0; free_tdev: |